Tanks, that answer absolutely explain everting Le 30 avr. 2017 10:29 PM, "Sven Van Caekenberghe-2 [via Smalltalk]" < ml+s1294792n4945003...@n4.nabble.com> a écrit :
> Because all 16 elements of the first/top ordered collection contain the > exact same element. They are all #==, the same instance/object. If you > change one, you change them all. > > Here is one way to create what I think you want: > > OrderedCollection new: 16 streamContents: [ :out | > 16 timesRepeat: [ out nextPut: (OrderedCollection new: 16 withAll: 0) ] > ] > > BTW, Arrays would be better in this case, I think. > > > On 30 Apr 2017, at 23:08, frankl1_miky <[hidden email] > <http:///user/SendEmail.jtp?type=node&node=4945003&i=0>> wrote: > > > > Hi everyone, > > > > I'm figuring out a strange behavoir with OrderedCollection. Actually > I've > > created a matrix using OrderedCollection like this: > > > > /c := OrderedCollection new: 16 withAll: (OrderedCollection new: 16 > withAll: > > 0). > > c./ > > But when I try to set the value at row 1 and column 2 to be 50 like > this: > > /(c at: 1) at: 2 put: 50/ > > I instead get 50 in any cell of the second column and I don't know why. > > > > When using a Matrix and the massage at:at:put, the behavoir is normal. > > > > Why that strange behavoir with OrderedCollection? > > > > > > > > -- > > View this message in context: http://forum.world.st/ > Implement-Matrix-whith-OrderedCollection-tp4945002.html > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > > > > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://forum.world.st/Implement-Matrix-whith-OrderedCollection- > tp4945002p4945003.html > To unsubscribe from Implement Matrix whith OrderedCollection, click here > <http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4945002&code=bWlrZTFjb3Jwb3JhdGlvbkBnbWFpbC5jb218NDk0NTAwMnw4NDI3ODA2> > . > NAML > <http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://forum.world.st/Implement-Matrix-whith-OrderedCollection-tp4945002p4945005.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
